Snowy Neckdowns

According to the aptly named TrafficCalming.Org, a neckdown is:

"Neckdowns are curb extensions at intersections that reduce the roadway width from curb to curb. They "pedestrianize" intersections by shortening crossing distances for pedestrians and drawing attention to pedestrians via raised peninsulas. They also tighten the curb radii at the corners, reducing the speeds of turning vehicles."

This video on StreetFilms.Org (part of the StreetsBlog network) takes a look at the affects of "snowy neckdowns" in New York, a phenomena also common in Portland: